AirHint found the following cheapest return flights from Denver (DEN) to Auckland (AKL) in December 2025 (see full year).
Return flights
| 02 Dec - 09 Dec | Delta | ||
| 13 Dec - 06 Jan | Frontier Airlines | ||
| 21 Dec - 03 Jan | Frontier Airlines | ||
| 17 Dec - 06 Jan | Delta |
Also check the deals for one-way flights from Denver to Auckland in December.
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